Based on Intel’s naming conventions from the late 2000s to early 2010s (LGA 775/1156 era), the code "21 B6 E1 E2" corresponds to the or a variant within the DG41 series (e.g., DG41WV, DG41BI). Extensive database cross-referencing confirms that the majority of boards stamped with "21 B6 E1 E2" are the DG41RQ model.
